Anti-abrasion cable-support



B. GHERARDI.

ANTI-ABRASION CABLE SUPPORT.

APPLICATION FILED NOV-26,1918.

Patented Apr. 13, 1920.

ATTORNEY UNITED STATES PATENT OFFICE.

BANGROFT GHERARDI, OF BAYI-IEAD, NEW JERSEY, ASSIGNOE T0 AMERICAN TELE-PHONE AND TELEGRAPH (JGMPANY,

A CORPORATION OF NEW YORK;

.ANTI-ABRASION CABLE-SUPPORT.

Application filed Novem ier 25, 15 18.

To all whom it may concern lle it known that I, BA onor-T GHERARDI,residing at Bayhead, in the county of Ocean and State of New Jersey,have invented certain Improvements in Anti-Abrasion Cable-Supports, ofwhich the following is a specification.

This invention relates to supporting devices, and more particularly tomeans for suspending electrical transmission, cables from a messengerstrand which is firmly attachei'l to poles spaced at definite intervalsalong a transmission line.

For some time past it has been customary to support aerial telephone,telegraph or power transmission cables by means oi. rings attached tothe messenger strand, which in turn supported by and securely attachedto poles. These rings vary widely in their term and mode of attachmentto the messenger strand, but, in general, they have been designed so asto grip the strand tightly and thereby avoid, in so far as practicable,any movement along the strand or my lateral moven'ientabout the strandas an axis. After the rings have been planed upon the strand, the cableto be suppo' ed is drawn through successive ring any suitable means,such as a rope,

which has been previously threaded through the rings. lt has beenobserved that cables suspended from messenger strands by means of ringshave, after varying periods of time, shown signs of wear, such ascutting and cracking where supported by the first 'tew rings on eachside of the poles to which the messen er s znd is attached.

A careful investigation of the cause oi? this t ouble leads to theconclusion that the cutting or abrasion oi the sheath by the aused.primarily by the swinging "mating oi the cable, \vhi 'h induces alateral n'iovement of tl'ie cable in the ing near the poles.

a result of this n'iotioin the cable sheath rubs against the rings andis gradually cut away by the more or less rough surtace of the rings.This, of course. permits the entrance of moisture into the cable andcircuit troubles result.

My invention consists in a which is capable of attachment to the s andin a manner which will prevent longitudinal movement along the strand,and is also :Free to swing laterally with the lat-era move-Spccification of Letters Eatent.

Patented Apr. 13, 1920.

Serial No. 264,259.

ment of the cable, thereby substantially a voiding any relative movementof the cable and the ring, and' consequently practically eliminating theabrasive etiects heretofore experienced wit-h rings that are rigidlyattached to the messenger strand. 7

My invention will be best understood from the attached drawing in which1 represents the messenger st-rand, and 2 represents the cable supportconsisting of a yoke 23, having its ends adapted to tightly grip themessenger strand, and a suspended ring 4, which is connected with andadapted to rotate about the member 7 of the yoke 3. T he cable 5 shownin the drawing in dotted lines, rests within the suspended ring l uponthe upper surfaces (3 ot the arms of this ring. The yoke is rigidly"fastened to the strand in a well known manner so that the ring will notbe moved longitudinally along the strand when the cable is being drawnthrough the ring or at any other time. The ring a is adapted to swingfreely about the bar 7 of the yoke It has been found desirable inpractice to attach one end of the said support to the yoke 3 by a closedloop 8 in the form of an eye and to leave the other end or loop 9 oi"-the said support open, as shown by the drawing, in order that the ringmay be placed around cables previously installed, whenever it is desiredto substitute this type of ring for the old rigid type. lVh-ei'i thering is in position, the end 9 of the ring may be closed as shown by thedotted lines, and slippa e from the yoke is thereby avoided, if therings are placed prior to the ii v:tallation of the cable both ends ofthe ring l may be attached to the yoke 3 in the manner shown at R in thedrawing.

it will be seen, therefore, that by means of this it ontion the ring 4lI QlflQ adapted "icswin Freely, wi l follow the lateral movement ot'the cable 5, which by its own weight adheres to the supporting surfaces6 of the arms of the ring. Consequently, there is substantially norelative movement between the cable and the supporting portion of thering, and as a result thereof, the abrasive effect is negligible.

rilthough this invention has been shown as embodied in a particularform, it is to be understood that it is capable of embodiment in manyand widely varied forms Without departing from the spirit of theinvention, as defined in the appended claims.

Having thus described the invention, what I claim and desire to secureby Letters Patent is:

1. A cable supporting device, adapted to be suspended from a messengerstrand, having a yoke provided with oppositely facing hooks adapted forrigid attachment to said strand, and a cable supporting ring pro videdwith oppositely facing loops r'or rotatably suspending said ring fromthe yoke.

2. A cable supporting device formed from two pieces of spring wirecomprising a yoke provided with a bar having at its ends upwardlyextending and oppositely facing hooks adapted to engage a messengerwire, and a cable ring constituting a support for a cable, said cablering having a loop at either of its ends whereby it is adapted to berotatably suspended from said yoke.

3. A cable supporting device formed from two pieces of spring wire,including a yoke comprising a bar having at its ends upwardly extendingand oppositely facing hooks adapted to engage a messenger wire, and acable ring constituting a support for a cable, said cable ring having aloop at either of its ends, the loops being hinged to said bar inproximity to each of its upwardly extending hooks, whereby it adapted tobe rotatably suspended from said yoke.

In testimony whereof, I have signed my name to this specification thistwenty-fifth day of November, 1918.

BANCROFT GHERARDI.

